I plant the most professional coupling manufacturer. Mechanical equipment maintenance or installation process, often encountered with the tight coupling hole axis. Often resulting coupling disassembly difficult or simply not do anything demolished. For some kind of problem, our approach is fundamental deviation from the various couplings with narrow shaft extension of value in order to reduce the waste of human and material resources when mechanical equipment maintenance. According to our "Mechanical Design Manual" in the provisions concerning the coupling hole and the shaft with the following: diameter d / mm: 6 ~ 30,> 30 ~ 50,> 50 with the code: H7 / J6, H7 / K6, H7 / M8 Note: 1, overloading, reversing, shock, vibration, etc. using H7 / R6, or H7 / N6 appropriate. 2, with the coupling hole and the motor or gear shaft selection H7 / R6 or M6 when H7 /, hole deviation according to the configuration process. According to the above regulations, with d> 50mm coupling hole and shaft should be H7 / M6. Overloading, shock, vibration should be H7 / R6, the actual encounter with the overhaul is also true. Such as steel mills pull billet casting transport roller, with hole reducer coupling between the roller and the roller shaft is H7 / R6, belong interference fit. Roll during use, withstand high temperatures baking, wear and spray cooling, it will not have much time to replace. At this point could have been removed to continue to use because of the coupling sleeve outer teeth with tight and difficult to remove had to replace with a roller. Because of this coupling is a complete supply, even if only a part of the coupling assembly also need a full charge. Such spare parts consumption cost is particularly high. The deviation from the axis of the coupling with the original R6 to the current G6, so that the original interference fit to clearance fit now will not affect the use, but also reduces maintenance costs and reduced equipment. Couplings form of http://www.lzqcj.com/news/116.html